from The Century Dictionary.
- noun One of the ventricles of the brain.
- noun The interior of the cranium or skull, containing the brain.
Sorry, no etymologies found.
If this wretched little remnant were a coil of explosive fuse within the brain-cavity itself, which any jar might set off, it could hardly be richer in possibilities of danger.
Such a feature would imply, on the supposition that the heads were of the ordinary size, a large brain-cavity, and so an unusual volume of brain, which is generally a concomitant of high intellectual power.
The Seven Great Monarchies Of The Ancient Eastern World, Vol 5. (of 7): Persia The History, Geography, And Antiquities Of Chaldaea, Assyria, Babylon, Media, Persia, Parthia, And Sassanian or New Persian Empire; With Maps and Illustrations.